Internal-combustion engine



1,624,454 April 12, 1927. JSH- WILSON INTERNAL COMBUSTION ENGINE Filed A112. 27, 1925 JO 7 24 /9 k9 Patented Apr. 12, 1927.

UNITED STATES 4% PATENT, OFFICE.

JOHN H. WILSON, OF SCOTTSBLUFF, NEBRASKA, ASSIGNOR OF ONE-HALF TO H. LESLIE SMITH AND ONE- HALF TO AUGUST DOBMANN, JR, BOTH OF SGOT TSBLUFF, NE-

BRASKA.

Application filed August 27, 1925;

The present invention relates to internal combustion engines and particularly of that type used as prime movers in automobiles and other vehicles and has for its principal object to provide improvements in the specific construction of certain parts thereof.

It is one of the primary objects of the invention to so construct the same that a single operatmg mechanism may be used for 7 all of the valves used in two sources.

A further object of the invention is to construct an internal combustion engine of the multiple cylinder type with the cylinders arranged in pairs so that rocker arms from the four valves of the two cylinders may be operated by a single operating mechanism.

Another important object of the invention is to construct an internal combustion engine with a valve operating mechanism consisting of a disc having cams thereon for actuating the rocker arms and mounted on a shaft provided with a worm gear meshing with a worm on the crank shaft thereby doing away with the push rods and cam shafts as are used quite commonly in the art now.

A still further important object of the invention is to provide an engine of this nature which is exceedingly simple in its construction and arrangement, thoroughly reliable and efficient in operation, inexpensive to manufacture, durable, and otherwise well adapted for the purpose for which it is designed.

lVith the above and other objects in view as will appear as the description proceeds, the invention resides in the novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 is a fragmentary vertical longitudinal section through the engine embodying the features of my invention;

Figure 2 is a top plan view thereof.

Referring to the drawing in detail it will be .seen that the numerals 5 designate the cylinders which are cast together in any suitable manner having the usual water jacket structure provided thereabout and receives thereon the head 6 which may be held in place by any of the well known means. Pistons 7 are slidably mounted in the cylinders 5 each having a connecting INTERNAL-COMBUSTION ENGINE.

Serial No. 52,808.

rod 8 associated therewith in the usual manner for association with the adjacent crank 9 of the crank shaft 10. The parts thus described are more or less of conventional construction and are very well known in the art and do not form apart of the present inventlon, except as may be hereinafter modified,- and claimed.

In the drawings I have shown an engine of the four cylinder type and the cylinders thereof are grouped in pairs and a detail explanation of one pair will be sufficient to fully understand the operation of the engine disclosed or any other multlple cylinder type of internal combustion engine. The worm 11 is mounted, formed, or 1n any other way provided on the crank shaft 10 and is in mesh with a worm gear 12, fixed to the shaft 13 that is journaled through the casting comprising the cylinders 5 and in suitable roller bearings 14- and 15. On the upper end of the shaft 13 there is mounted a disc 16 having cams 17 thereon, one disposed adjacent the periphery thereof and the other a distance inwardly of the periphery.

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The valves 18 are of the ordinary type now in common use and are actuated in the ordinary manner by rocker arms 19, the free ends of which are provided preferably with rollers 20 and springs 21 function to hold these roller ends 20 in engagement with the discs 16 so that as said discs rotate, some of the arms are actuated by the outer cams 17 and others by the inner cams 17 depending, of course, as to whether they are intake valves or exhaust valves. This may be arranged as desired. The important point is that the four valves incident to two cylinders, are operated by the single disc.

The rocker arms 19 are mounted on pins 25, each having eccentrically disposed portions 26 and 27, the former of which functions as the pivots for the respective rocker arm, and the latter of which is mounted in a bracket 28. It will thus be seen that by turning the pivot pin the rocker arms may be adjusted for adjusting the valves, that is the amount of opening of the valves may be changed or regulated. Attention is also called to the extension 29 at the bottom end of each shaft 13, which is utilized to operate a rotary oil pump (not shown) for assisting in the lubrication of the device. An extension 30 is provided at the top of one shaft l3, tor the operation of a distributor (not shown). Both the distributor and oil pump are of conventional construction.

It is thought that the construction, opera? tion, utility, and advantages of this invention will now be clearly understood without a more detailed description thereof. It is desired, however, to point out that by the use of the arrangement and combination of elements specifically described above, llllite u. minimum number of parts are used in the operation of the valves and that it is possible to do away with the usual cam shaft, push rods and the like which cause considerable trouble in engines using them. The present embodiment of the invention has been dis closed in detail, since in actual practice it attains the :l'eatures and advantages, enumerated in the statement of the invention and the above description. It will be apparent however, that numerous changes in the details of construction and in the combination ot the invention as hereinafter claimed or sacrificing any of its advantages.

Having; thus described my invention What I claim as new is:

In an internal COIIlbI'ISt'iOIl engine, a eylinder, a pair of valves associated with the cylinder, arocker arm associated with each valve for operating thereof, a single disc, means for rotating the disc, a pair 0t cams on the disc for actuating the rocker arms, one cam being located closer to the center of the disk than the other, and means for pivotally mounting the 1' ch arms to extend sustantially tangentially to the disc, obliquely to each other and so that one rocker arm engages one cam and the other rocker arm engages the other cani.

In testimony whereof I afiix my signature.

JOHN H. WILSON. 

